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P.C. Engineering Corporation
Spirax Sarco SRV66 Sanitary Pressure Reducing Valve - Stainless Steel PRV for Hygienic Applications

Overview

The Spirax Sarco SRV66 is an angle-pattern, self-draining sanitary pressure reducing valve designed for hygienic process applications. Constructed entirely from 316L stainless steel, this valve is suitable for clean steam, water, and inert industrial gases in pharmaceutical, biotech, and food processing environments.

The SRV66 features a self-acting design that requires no external pressure sensing line, simplifying installation and reducing potential contamination points. It is compatible with Clean-In-Place (CIP) and Sterilise-In-Place (SIP) protocols, making it ideal for sterile processing systems. The valve meets VDI/VDE 2174 tightness standards with a leakage rate of less than 0.5% of Kvs value.

Available in sizes DN15 to DN50 with ISO 2852 sanitary clamp connections as standard, the SRV66 can be specified with optional ASME BPE clamps, flanges, or welding spigots. Polished versions with surface roughness down to Ra ≤ 0.25 µm are available for pharmaceutical and superclean applications.

Key Features

  • All 316L stainless steel wetted parts construction
  • Self-draining angle pattern design
  • No external pressure sensing line required
  • CIP and SIP compatible
  • Standard surface finish Ra < 3.2 µm (polished options available)
  • Oil and grease free
  • FDA and USP Class VI certification options available
  • PTFE-encapsulated FPM diaphragm (Viton option available)
  • Valve tightness per VDI/VDE 2174

Specifications

ParameterValue
SizesDN15, DN20, DN25, DN32, DN40, DN50
ConnectionsISO 2852 sanitary clamp (ASME BPE, flanges, NPT optional)
Body MaterialStainless Steel 1.4404 (316L)
DiaphragmFPM (Viton) / PTFE
Inlet RatingPN10
Pressure Ranges0.3–1.1 bar g / 0.8–2.5 bar g / 1.0–5.0 bar g
Max Design Pressure9.5 bar @ 50°C
Max Design Temperature300°C @ 5.8 bar
Max Operating Temperature180°C
Min Operating Temperature-10°C
Surface Finish (Standard)Ra < 3.2 µm
Surface Finish (Optional)Ra ≤ 0.25, 0.4, or 0.8 µm
Weight2.0 kg (DN15-DN25) to 4.0 kg (DN50)

Applications

The SRV66 is engineered for industries requiring hygienic pressure control in sterile or cleanroom environments:

- Pharmaceutical & Biotech: Clean steam supply to bioreactors, autoclaves, sterilisers, and freeze dryers - Food & Beverage: Culinary steam, process tank pressure regulation - Healthcare: Humidifier steam supply, sterilisation equipment - Semiconductor & Electronics: Inert gas pressure control in cleanroom processes

Frequently Asked Questions

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